Wall hanging device



FIG. 1 is a perspective view of the new design for a wall hanging device;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a third perspective view thereof;

FIG. 4 is a forth perspective view thereof;

FIG. 5 is a fifth perspective view thereof;

FIG. 6 is a front elevation view thereof;

FIG. 7 is a back elevation view thereof;

FIG. 8 is a right side elevation view thereof, the opposite view being a mirror image;

FIG. 9 is a top plan view thereof; and,

FIG. 10 is a bottom plan view thereof.

The broken lines depicting the pin represent unclaimed subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a wall hanging device, as shown and described. 